Union Pacific Railroad diesel locomotive number 840 at Tacoma, Washington on March 15, 1970. UP 840 leads an extra freight by the Sperry Mill in Tacoma in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 75 at Tacoma, Washington, in March 1972. UP 75 a DD35A, in a consist passing through Moon Yard in Tacoma in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad diesel locomotive number 75 at Tacoma, Washington on May 01, 1971. UP 75 a DD35A, in a consist passing UP Junction in Tacoma in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad diesel locomotive number 731 at Montesano, Washington on September 15, 1975. UP 731, a GP30, crosses a trestle near Montesano Washington in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, trestle bridge.

Union Pacific Railroad diesel locomotive number 731 at Montesano, Washington on September 18, 1975. UP 731, running light over the truss bridge at Montesano in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, truss bridge.

Union Pacific Railroad diesel locomotive number 723 at Longview Junction, Washington, in July 1976. UP 723 leads a local freight at Longview Junction in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 3753 at Motanic, Oregon, in 1986. UP 3753 leads 2936 and two other locomotives on an eastbound freight at Motanic Oregon in 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 3637 at Tacoma, Washington, in 1975. UP 3637 leads SP 8824 and SP 9347 leads southbound freight by UP Junction in Tacoma in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 3435 at Motanic, Oregon, in 1986. UP 3435 and 2433 lead two other units on a freight at Motanic in 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 3364 at Tacoma, Washington, in 1979. UP 3364 and 3233 lead freight train No. 684 by the Tacoma grain terminal in 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.